254137720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{71387}}^1$

素因数の和:71487

約数の個数: 32

約数和(自身を含む): 578242800

約数和(自身を除く): 324105080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 71387, 142774, 285548, 356935, 571096, 713870, 1427740, 2855480, 6353443, 12706886, 25413772, 31767215, 50827544, 63534430, 127068860, 254137720]

約数ペア:

[(1, 254137720), (2, 127068860), (4, 63534430), (5, 50827544), (8, 31767215), (10, 25413772), (20, 12706886), (40, 6353443), (89, 2855480), (178, 1427740), (356, 713870), (445, 571096), (712, 356935), (890, 285548), (1780, 142774), (3560, 71387)]